Brother B-500, Руководство по обслуживанию

Страница: 90 / 211

3 - 19
Thread tension mechanism Main unit
Assembly
1-1
Assembly of Thread unit L (Attachment of Thread catching spring case)
1. Attach the spring tape
2
to the Thread unit L
1
.
2. Attach the spring to the thread catching spring case
3
.
*Key point
• Check that the tip of the spring insert into the hole
4
from the
bottom of the thread catching spring case, when set it as
shown in the right figure.
• Check that the spring is between the protrusions 5 (2
locations).
3. Attach the thread catching spring case
3
to the Thread unit L
1
with the
screw
1
.
*Key point
• Check that the protrusions 5 (2 locations) of the thread
catching spring case
3
engaged with the positioning hole
6
of the Thread unit L 1 .
• Check that from the lower side of the notch part of the Thread
unit L 1 to the bent section of the spring is 9 to 10 mm.
1
Torque
0.59 – 0.78 N·m
S02
4
5
3
S02
2
1
1
3
1
5
6
9-10mm
S02
Screw, Pan (Washer)
M3X18
15.6
7.4
SPRING
XE2029***
1-2
Assembly of Thread unit L (Attachment of Thread guide wire)
1. Attach the thread guide wire
1
and the washer
2
to the Thread unit L
3
with the screw
1
.
*Key point
• Check that the section 4 of the thread guide wire 1 engaged
with the notch part
5
of the Thread unit L
3
.
1
Torque
0.59 – 0.78 N·m
1
1 2 3
4
5
Screw, Pan (S/P washer)
M3X6